Disney, Theaters Clash Over 'Iron Man 3'

LAS VEGAS—The two biggest U.S. movie-theater chains are refusing to sell online tickets for Walt Disney Co.'s coming film "Iron Man 3" amid a dispute with the studio over how revenue is split.

The stance by Regal Entertainment Group and AMC Entertainment Holdings Inc., which together operate nearly 12,000 screens at 881 locations, comes two weeks before the hugely anticipated movie opens on May 3, kicking off Hollywood's...